CN203705893U - Intelligent greenhouse-management system based on Internet of Things - Google Patents

Abstract

The utility model discloses an intelligent greenhouse management system based on the Internet of Things, which includes a control terminal for displaying, transmitting and processing data, a coordinator for transmitting and receiving signals, and a relay for controlling a feedback control circuit, which is controlled by the relay to make corresponding facilities in the greenhouse Feedback control circuit for start and stop, monitoring network for collecting data in the greenhouse and remote browser for user access; the management system can set the upper and lower limits of the alarm and the alarm stop value according to the actual situation, and the performance is stable. Realize arbitrary placement of monitoring points, flexible system organization; single-point or multi-point collection of multiple physical objects in the greenhouse environment; increase or decrease the number of monitoring objects and monitoring points in the network according to the actual needs of users, and the monitoring data of different objects can also be Computation, processing and transmission can be performed in the same network, the system has good adaptability and compatibility; it has good working stability and measurement accuracy, wide monitoring range, low energy consumption and long running time.

Description

Intelligent Greenhouse Management System Based on Internet of Things

technical field

The utility model belongs to the technical field of agricultural greenhouses and relates to an intelligent greenhouse, in particular to an intelligent greenhouse management system based on the Internet of Things. the

Background technique

The traditional agricultural structure model has great defects in terms of green environmental protection, energy conservation, high yield and high yield. Most of the commonly used farmland greenhouses do not have soil moisture monitoring methods, but use planting experience, visual inspection (observation) and other means to subjectively judge whether to irrigate, which not only wastes water resources, but also cannot make crops grow under suitable soil moisture; Eliminate the influence of ambient air temperature and humidity on crop growth.

In recent years, IoT technology has been widely used in various aspects such as medical care, smart home, national defense, military, and intelligent transportation. At present, the Internet of Things technology has also been applied to the control of intelligent greenhouses, but the existing greenhouse management systems are complex in operation, not easily accepted by the majority of users, and the system is easily affected by various environmental conditions and its performance is unstable. the

Contents of the invention

The purpose of the utility model is to provide an intelligent greenhouse management system based on the Internet of Things, which is simple in operation, relatively stable in performance, and easily accepted by the majority of users.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an intelligent greenhouse management system based on the Internet of Things, including a control terminal, a coordinator, a relay, a feedback control circuit, a monitoring network and a remote browser; wherein,

The monitoring network is used to collect the current environmental status data in the greenhouse, and transmit the collected data to the coordinator through wireless communication;

The coordinator is used to receive the data transmitted by the monitoring network and transmit the received data to the control terminal; it is used to receive the control signal sent by the control terminal and transmit the control signal to the relay;

The control terminal is used to receive the current environmental status data in the greenhouse transmitted by the coordinator, display the received data in a visual way, and observe the current environmental conditions in the greenhouse in real time through dynamic tracking curve display and intuitive numerical display on the display interface. Environmental conditions; and send the current environmental conditions in the greenhouse to the remote browser through Ethernet; used to pre-set the upper and lower limits of the control parameters, and compare the received current environmental conditions in the greenhouse with the set control parameters , when the current environmental status data in the greenhouse exceeds the preset upper or lower limit, the data is processed to form a control signal, and the control signal is transmitted to the coordinator;

The relay is used to receive the control signal transmitted by the coordinator, and is driven by the control signal to generate corresponding actions, thereby controlling the feedback control circuit;

The feedback control circuit is subject to the relay, and the action generated by the relay controls the start and stop of lights, fans, irrigation facilities and sunshade facilities;

The remote browser is used to receive the current environmental status data in the greenhouse transmitted by the web server of the control terminal through Ethernet for user access.

The intelligent greenhouse management system of the utility model adopts a wireless sensor network, which avoids the trouble of wiring, improves the degree of automation, improves the flexibility of sensor arrangement, and facilitates regional measurement and control. Setting the upper and lower limits of the alarm and the alarm stop value enables the system to be applied in a wider range and in different fields. At the same time, the alarm mode can be selected, and the sensor and SMS can be set. The system is fully designed on the gateway control interface, adding multiple temperature and humidity data display areas. The lower part of the gateway interface is the dynamic waveform display diagram of temperature, humidity and light. The feedback control adds four-way expandable functions. The upper and lower limits and the alarm stop value can be set by the user according to the actual situation. The problem of performance stability existing in the prior art is solved. The arbitrary placement of monitoring points can be realized, and the system organization is flexible; the function of single-point or multi-point collection of multiple physical objects in the greenhouse environment can be realized; at the same time, the number of monitoring objects and monitoring points in the network can also be adjusted according to the actual situation of the user. It needs to be increased or decreased, and the monitoring data of different objects can also be calculated, processed and transmitted in the same network. The system has good adaptability and compatibility; the greenhouse management system has good working stability and measurement accuracy, and the monitoring Wide range, low energy consumption and long runtime. the

Description of drawings

Fig. 1 is a structural schematic diagram of the intelligent greenhouse management system of the present invention.

Fig. 2 is a diagram of the wireless sensor network system in the intelligent greenhouse management system of the present invention.

Fig. 3 is a structural block diagram of sensor nodes in the intelligent greenhouse management system of the present invention.

Fig. 4 is a structural block diagram of a converging node in the intelligent greenhouse management system of the present invention.

Fig. 5 is a flow chart of realizing the temperature, humidity and illumination functions of the intelligent greenhouse management system of the present invention.

In the figure: 1. Control terminal, 2. GSM module, 3. Coordinator, 4. Infrared sensor, 5. Relay, 6. Feedback control circuit, 7. Security system, 8. Monitoring network, 9. Wireless sensor network, 10 . Convergence node, 11. Management node, 12. Single-chip microcomputer, 13. Light, 14. Fan, 15. Irrigation facility, 16. Sunshade facility, 17. Mobile phone, 18. Remote browser.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the intelligent greenhouse management system of the utility model includes a control terminal 1, a GSM module 2, a coordinator 3, a relay 5, a feedback control circuit 6, a monitoring network 8, a remote browser 18 and a security system 7; wherein ,

The monitoring network 8 is used to collect the current environmental status data of the greenhouse such as temperature, humidity and light in the greenhouse, and transmit the collected environmental status data to the coordinator 3 through wireless communication;

The coordinator 3 is used to receive the current environmental status data in the greenhouse transmitted by the monitoring network 8, and transmit the received data to the control terminal 1; it is used to receive the control signal sent by the control terminal 1, and transmit the control signal to the relay 5;

The control terminal 1 is used to receive the data transmitted by the coordinator 3, and display the received current environmental status data in the greenhouse in a visual way, and observe the greenhouse in real time through dynamic tracking curve display and intuitive numerical display on the display interface. Current environmental conditions; and send the current environmental conditions in the greenhouse to the remote browser 18 through Ethernet, and transmit the current environmental conditions data in the greenhouse to the GSM module 2 through the serial port; for presetting the upper limit and the lower limit of the control parameters, Compare the received current environmental status data in the greenhouse with the set control parameters, and when the current environmental status data in the greenhouse exceeds the preset upper or lower limit, process the data to form a control signal, and send the control signal transmitted to coordinator 3;

The GSM module 2 is used to receive the current environmental conditions in the greenhouse transmitted by the control terminal 1, and then send the current environmental conditions in the greenhouse to the mobile phone 17 of the user in the form of a short message;

The relay 5 is used to receive the control signal transmitted by the coordinator 3, and is driven by the control signal to generate a corresponding action, thereby controlling the feedback control circuit 6;

The feedback control circuit 6 is subject to the relay 5, and the action control lamp 13, the fan 14, the irrigation facility 15 and the sunshade facility 16 are activated and closed by the action generated by the relay 5;

The remote browser 18 is used to receive the current environmental status data in the greenhouse transmitted by the web server of the control terminal 1 through Ethernet, for remote access by users;

The security system 7 is used for the security of the greenhouse, and the human body infrared sensor is used to make a security system to prevent man-made malicious damage.

As shown in FIG. 2 , the monitoring network 8 in the intelligent greenhouse control system of the present invention includes a wireless acquisition sensor network 9 , a convergence node (gateway) 10 and a management node 11 . The wireless acquisition sensor network 9 includes a plurality of sensor nodes, which are distributed in or near the monitoring area and form a network in a self-organizing manner. Due to the large number of sensor nodes, sometimes there will be redundancy, but because of this, there will be no data loss. The disadvantage of wireless sensor network 9 is that its storage and communication capabilities are relatively weak. The storage, processing and communication capabilities of the aggregation node 10 are relatively strong, it connects the wireless sensor network 9 and the external network, and completes the communication between the wireless sensor network 9 and the external network; an interface is developed at the gateway, which can make the user more Get the information you need intuitively. The management node 11 mainly transmits to the aggregation node 10 through the base station in the form of Internet or satellite communication.

The sensor node is shown in Figure 3, which generally consists of a control module, a sensor module, a wireless communication module, a storage module and a power supply module. The controller module consists of a CORTEX A8DB development board (using Windows Embedded CE6.0 operating system) and a network coordinator (its main chip is CC2530), which is responsible for controlling and managing sensor nodes; the sensor module is responsible for monitoring environmental information (such as light intensity , temperature, humidity, etc.) to collect and do certain data conversion. In the intelligent greenhouse management system of the utility model, a temperature and humidity sensor (SHT10) is used to collect temperature and humidity information, and a silicon photodiode (BPW34S) is used to collect light information; the wireless communication module is responsible for The sensor nodes communicate with each other according to a certain communication protocol; the power supply module supplies power to the sensor nodes and provides the power required for the operation of each part of the sensor nodes. Usually, it is powered by batteries. The ZigBee network can ensure that two AA batteries can be used for up to two months. Use time of about two years. In addition, due to different application scenarios, sensor nodes may also add some other supporting modules, such as GMS modules.

The convergence node 10 in the intelligent greenhouse management system of the present invention is shown in FIG. 4 , and the processor module in the convergence node 10 adopts a CC2530 wireless microcontroller. The CC2530 wireless microcontroller is a true IEEE 802.15.4 compliant system-on-chip, supporting the proprietary 802.15.4 market as well as the ZigBee, ZigBee PRO and ZigBee RF4CE standards. The CC2530 wireless microcontroller offers 101dB link quality, excellent receiver sensitivity and robust interference immunity, four power supply modes, multiple flash memory sizes, and an extensive set of peripherals—including 2 USARTs, 12-bit ADC and 21 general-purpose GPIOs, and more. In addition to enhancing the 8051 MCU core with excellent RF performance, selectivity, and industry standards to support general low-power wireless communication, the CC2530 wireless microcontroller can also be equipped with one of TI's standards-compliant or proprietary network protocol stacks (RemoTI, Z- Stack, or SimpliciTI) to simplify development and get you to market faster. Manage and control the aggregation node 10; the storage module stores the information or data information of the aggregation node 10; the node communication module is responsible for exchanging information with sensor nodes; the serial port communication module is responsible for serial communication with the host computer. The processing capability, storage capability and communication capability of the aggregation node 10 are relatively strong, it connects the wireless sensor network 9 and external networks such as the Internet, realizes the communication protocol conversion between the two protocols, releases the monitoring task of the management node 11 at the same time, and sends the Data such as temperature, humidity and light in the greenhouse collected by the monitoring network 8 are forwarded to the external network.

Relay 5 adopts a relay module, which is a GPIO expansion chip with an IIC interface with interrupt output, in which the relay output can be configured as a normally open or normally closed contact (use a double-pole double-touch relay to improve reliability, use jumper selection); buttons or external GPIN input can be configured as active high or active low (output interrupt signal when active). The processing module in the management node 11 needs to use the IIC interface to configure the IIC bus expansion chip after being powered on, so as to use the above functions. When the IIC bus expansion chip is not configured, it is the default input. When there is a need for a default state, it is necessary to use a pull-up or pull-down design on the relay control end to ensure the correctness of the default output logic of the relay.

The coordinator 3 is the central node of the wireless sensor network, and there is only one network coordinator in a network (the coordinator 3 is a kind of network coordinator). Among them, the network coordinator is mainly responsible for the establishment of the network and the related configuration of the devices in the network, but when the structure of the wireless sensor network changes, other FFD devices can also take on the role of the router.

The intelligent greenhouse management system of the utility model uses the humidity sensor, the light sensor and the temperature sensor as the wireless sensor network, and uses the wireless communication function of the module to transmit the collected signal to the coordinator 3, and the coordinator 3 transmits the collected signal through the serial port It is transmitted to the control terminal 1 and displayed in a visual way on the control terminal 1. On the control interface of the control terminal 1, the current environment can be observed in real time through dynamic tracking curve display and intuitive numerical display. In addition, the control terminal 1 and The GSM communication module 2 is transmitted through the serial port, and can regularly send short messages to the mobile phone 17 of the designated customer every day, and can also edit the short messages through the short message center to inform the user of the current environment in real time. Environmental monitoring report, after analyzing and processing the data, make corresponding controls, such as controlling the relay node to open the solenoid valve for irrigation, etc., so that the temperature, humidity and light value can be controlled in the best state.

The CC2530 wireless microcontroller is used to read the temperature and humidity data of the temperature and humidity sensor SHT10, and the data of the light sensor is obtained by the analog-to-digital conversion (ADC) inside the CC2530 wireless microcontroller. Then transfer the collected data to the coordinator 3 after conversion. When the temperature, humidity, and light data collected by the node module are greater than the range of the given value, the buzzer on the node is triggered and an alarm sound is issued. The flow chart of temperature, humidity and light data acquisition is shown in Figure 5. First set the clock source and crystal oscillator and initialize the LCD, read the temperature and humidity, convert the temperature and humidity results into character strings, and display them. Enable AINO as the ADC input channel, start a single conversion, wait for the conversion to complete, disable AINO, read the ADC value, convert the illumination result to a string, and display the result. And the cycle operation is carried out for the temperature, humidity and light collection and display process, so that the data can be displayed in real time. The temperature and humidity data is read by the I/O analog IIC process of the CC2530 wireless microcontroller. The light data is obtained through the ADC inside the CC2530 wireless microcontroller; the light sensor output voltage on the OURS-CC2530 development board, and the output voltage is connected to AIN0 of the CC2530 wireless microcontroller.

The intelligent greenhouse management system of the utility model builds a cluster tree-like ZigBee network oriented to greenhouse environmental monitoring applications through a converging node 11 and several router nodes and terminal nodes, adopts CC2530 wireless microcontroller as the basic platform, and is based on the ZigBee Pro protocol The stack has developed the application program of the system equipment to realize the requirements of the intelligent greenhouse management system for the measurement of the ambient temperature and humidity. Use ZigBee technology for wireless communication, build a wireless sensor network, and meet the needs of various parameter monitoring in the greenhouse management system; design four system functional modules of networking, wireless communication, data display, and feedback control according to the ZigBee communication protocol specification, and focus on research The network access and communication principles of terminal nodes, routing nodes and network coordinator are explained. The system realizes remote monitoring, real-time acquisition and control of the greenhouse environment, and can display and remotely send information in real time. Using the four functional modules designed in this paper, the experimental platform is built, and the local control terminal, remote control and data acquisition are tested, and the data display and comparison are completed, and the corresponding feedback control is carried out.

The advantages of adopting the Internet of Things technology to the intelligent greenhouse management system are mainly reflected in three aspects: (1) The size of the sensor node is small and the entire network only needs to be deployed once, and the deployment of the sensor network has little impact on the monitored environment; (2) The sensor node The quantity is large, the distribution density is high, and it has the characteristics of large amount of data collection and high precision; (3) The agricultural wireless sensor monitoring system based on ZigBee technology provides a platform for real-time collection and remote transmission of farmland environmental information for crop production; (4) ) The sensor node itself has certain computing power, storage and communication capabilities, and can perform more complex monitoring according to changes in the physical environment, and perform collaborative monitoring between nodes.

. The sensor layer of the Internet of Things realizes the sensor collection and feedback control of various physical quantities through wireless networking or field bus. Various terminals, including mobile phones, realize intelligent interaction and management. The hardware devices include wireless node modules, sensor modules, embedded gateways and other supporting equipment. The wireless node module and the sensor module are the wireless acquisition part, and the gateway belongs to the control terminal. There are other feedback devices.

After the functions of each module of the whole system are realized, a simulation test environment is built to test and verify whether the functions of the whole system can achieve the expected functions.

The system has been tested and found that the monitoring points can be placed arbitrarily, and the system organization is flexible; the function of single-point or multi-point collection of multiple physical objects in the greenhouse environment can be realized; at the same time, the number of monitoring objects and monitoring points in the network It can also be increased or decreased according to the actual needs of users, and the monitoring data of different objects can also be calculated, processed and transmitted in the same network, and the system has good adaptability and compatibility; The data can also be increased or decreased according to the actual needs of users, and the monitoring data of different objects can also be calculated, processed and transmitted in the same network, the system has good adaptability and compatibility; the user interface of this system is friendly, making the data Display and control are more direct. The test shows that the intelligent greenhouse management system has good working stability and measurement accuracy, and the data of environmental factors collected by the sensor nodes has reached the expected data collection effect.

The Internet of Things technology makes all aspects develop towards the trend of low energy consumption, small size and high energy utilization rate. Using the current advanced agricultural Internet of Things technology combined with environmental monitoring systems and meteorological and pest monitoring and early warning systems, the management and regulation of greenhouse crops tend to be refined, effectively improving the overall level of agriculture. It also effectively alleviates the seasonal contradictions, makes the crops appear on the market against the season, breaks its traditional seasonality, and meets people's higher demand for quality of life. the

Claims (3)

1. An intelligent greenhouse management system based on the Internet of Things, characterized in that it includes a control terminal (1), a coordinator (3), a relay (5), a feedback control circuit (6), a monitoring network (8) and a remote Browser (18); where, The monitoring network (8) is used to collect the current environmental status data in the greenhouse, and transmit the collected data to the coordinator (3) through wireless communication; The coordinator (3), used to receive the data transmitted by the monitoring network (8), and transmit the received data to the control terminal (1); used to receive the control signal sent by the control terminal (1), and send the control signal pass to relay(5); The control terminal (1) is used to receive the current environmental status data in the greenhouse transmitted by the coordinator (3), display the received data in a visual way, and display the real-time tracking curve display and intuitive numerical display on the display interface. to observe the current environmental conditions in the greenhouse; and send the current environmental conditions in the greenhouse to the remote browser (18) via Ethernet; it is used to pre-set the upper limit and lower limit of the control parameters, and the received current environmental conditions in the greenhouse The data is compared with the set control parameters. When the current environmental status data in the greenhouse exceeds the preset upper or lower limit, the data is processed to form a control signal, and the control signal is transmitted to the coordinator (3); The relay (5) is used to receive the control signal transmitted by the coordinator (3), and is driven by the control signal to generate a corresponding action, thereby controlling the feedback control circuit (6); The feedback control circuit (6), subject to the relay (5), controls the start and stop of the lamp (13), the fan (14), the irrigation facility (15) and the sunshade facility (16) through the action generated by the relay (5); The remote browser (18) is used for receiving the current environmental status data in the greenhouse transmitted by the web server of the control terminal (1) via Ethernet for user access. 2. The intelligent greenhouse management system based on the Internet of Things according to claim 1, characterized in that the intelligent greenhouse management system also includes a GSM module (2), and the GSM module (2) is used to receive the greenhouse information transmitted by the control terminal (1). The current environmental conditions in the greenhouse, and then send the current environmental conditions in the greenhouse to the user's mobile phone (17) in the form of a short message. 3. According to the intelligent greenhouse management system based on the Internet of Things according to claim 1 or 2, it is characterized in that the intelligent greenhouse management system also includes a security system (7), which is used for the security of the greenhouse, and the security system is made by using human infrared sensors , to prevent man-made malicious damage.